An online photo lab usually charges $0.25 per print to make color print from a digital file. During a special promotion, customers receive a $0.50 discount if 12 or more prints are made. Which is true, "the cost c is a function of the number of prints made" or "the number n of prints made is a function of the cost c?"

question is incomplete.

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question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.